W DOC AIRBUS | AMM A320F

Removal of the Check Valve

TASK 29-13-48-000-001-A
Removal of the Check Valve

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND THE RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
CAUTION: BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING EDGE:
  • DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
  • DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
  • MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.
FIN: 3170GM
1. Reason for the Job
Self Explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 3M (10 FT)
No specific
1
CONTAINER 5 L (1.32 USGAL)
No specific
AR
PLUG - BLANKING
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
1
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
575DB
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 27-50-00-866-008-A
Extension of the Flaps on the Ground
TASK 27-50-00-866-008-A-01
Extension of the Flaps/Slats on the Ground
TASK 27-60-00-866-002-A
Extension-Retraction of the Spoilers for Maintenance
TASK 29-00-00-910-002-A
Safety Procedures of the Hydraulic System
TASK 29-14-00-614-001-A
Depressurization of the Hydraulic Reservoirs
TASK 29-23-00-860-001-A
Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 57-51-37-000-004-A
Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)
F Flap WTB Check Valve 3170GM
3. Job Set-up
Subtask 29-13-48-941-053-A
A. Safety Precautions
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
   (1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
   (2) Put the SAFETY BARRIER(S)S in position.
   (3) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulic system.
Subtask 29-13-48-860-050-A
B. Aircraft Maintenance Configuration
   (1) Extend the flaps fully (Ref. AMM TASK 27-50-00-866-008).
   (2) Make sure the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is on the flap/slat control lever on panel 114VU.
   (3) Extend the No 3 spoiler for maintenance (Ref. AMM TASK 27-60-00-866-002).
   (4) Disconnect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-001).
   (5) Depressurize the Yellow hydraulic-system reservoir (Ref. AMM TASK 29-14-00-614-001).
   (6) Remove the safety collar from the circuit breakers 10CV and 12CV.
Subtask 29-13-48-865-050-A
C. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SEC1/NORM/SPLY21CE1B08
49VUFLIGHT CONTROLS/FLP/CTL AND MONG/SYS16CVB07
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SEC1/NORM/SPLY21CE1B03
49VUFLIGHT CONTROLS/FLP/CTL AND MONG/SYS16CVB02
** ON A/C ALL
105VUFLT CTL/SEC1/STBY SPLY22CEB01
121VUFLIGHT CONTROLS/WTB/FLP/SYS212CVP20
121VUHYDRAULIC/Y HYD/PUMP ENG2/MONG3700GDQ37
121VUHYDRAULIC/Y HYD/PUMP ENG2/CTL3701GDQ36
121VUFLIGHT CONTROLS/FLP/CTL AND/MONG/SYS28CVQ21
121VUFLIGHT CONTROLS/SEC3/SPLY21CE3Q19
121VUFLIGHT CONTROLS/SEC2/SPLY21CE2Q18
122VUFLIGHT CONTROLS/WTB/FLP/SYS110CVS07
Subtask 29-13-48-010-050-A
D. Get Access
   (1) Put an ACCESS PLATFORM 3M (10 FT) below access panel 575DB.
   (2) Remove the access panel 575DB (Ref. AMM TASK 57-51-37-000-004).
   (3) Put a CONTAINER 5 L (1.32 USGAL) below the check valve.
4. Procedure
CAUTION: BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING EDGE:
  • DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
  • DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
  • MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.
Subtask 29-13-48-020-050-A
A. Removal of the Check Valve
WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:
  • FLUSH IT AWAY WITH CLEAN WATER
  • GET MEDICAL AID.
CAUTION: MAKE SURE THAT THE FLUID DOES NOT STAY ON THE AIRCRAFT STRUCTURE. IF THE FLUID GETS ON THE AIRCRAFT STRUCTURE, WASH IT OFF IMMEDIATELY WITH SOAP AND WATER.
   (1) Loosen and disconnect the coupling nuts (3) and (5) and remove the pipe (4).
   (2) Remove the check valve (2) from the coupling nut (1).
   (3) Put the PLUG-BLANKING in each disconnected line end.
   (4) Remove the CONTAINER 5 L (1.32 USGAL) and correctly discard the hydraulic fluid.
[Rev.10 from 2021] 2026.04.01 00:21:59 UTC
"Aviabrain" 2025